What kind of car is the GMC Syclone?
GMC’s sinister siblings the Syclone and Typhoon trace their origins to the turbocharged tire-shredding Buick Grand National and Pontiac’s 20th-Anniversary Turbo Trans Am.
What causes a fuel injector to stop delivering fuel?
An injector becomes clogged with fuel varnish deposits and fails to deliver its normal dose of fuel when it’s energized, or. Fuel pressure to the injector drops below specifications because of a weak fuel pump, plugged fuel filter or leaky fuel pressure regulator.
How do you know when to replace a fuel injector?
Another effective test is to measure the pressure loss in the fuel rail when each injector is fired and pulses for a set period of time. Use an electronic injector pulse tester for this. As each injector is energized, a fuel pressure gauge is observed to monitor the drop in fuel pressure.
Where is the fuel injector located in a six cylinder engine?
The same applies to the injectors in the middle cylinders in six- and eight-cylinder engines. The hotter the location, the more vulnerable the injector is to clogging from heat soaks. Throttle body injectors are less vulnerable to heat soak because of their location high above the intake manifold plenum.
How to repair a GMC Vortec fuel injector?
1. Heat the hose like you did before. Heating only the very end will help you keep from kinking. 2. Slowly press the poppet back in, don’t rush it. 3. let it fully cool and give it a few good tugs to make sure it set.
What are the symptoms of a bad fuel injector assembly?
Symptoms Of A Bad ‘Spider’ Fuel Injector Assembly. The most common type of failure (related to the ‘Spider’ fuel injector) is usually not the assembly itself going bad, but the fuel pressure regulator going bad. The fuel pressure regulator is infamous for leaking fuel from its vacuum inlet nipple.
What causes a fuel injector to misfire and hydrolock?
‘Spider’ Fuel Injector Misfire and Hydrolock (Troubleshooting Case Study) . This case study will help you diagnose a fuel injector (within the ‘Spider’) that’s stuck open and causing a Hydrolock condition. Contents of this tutorial: Important Tips And Suggestions. ‘Spider’ Fuel Injector Basics. Symptoms Of A Bad ‘Spider’ Fuel Injector Assembly.
When to replace the CSFI fuel injector assembly?
The CSFI does use a MAF sensor and the plenum is plastic and was used from 1996 on up on the 4.3L, 5.0L and 5.7L engines. Also, when anything fails in the CPI type system, you have to replace the entire fuel injector assembly. In the CSFI system, all parts can be replaced individually.